Heater



heating eiiiciency Patented Marv 27, 1928.

EDWARD NAUER, 0E SAN ERANcIsoo, CALIFORNIA.

HEATER.

Application led December 12, 1927. Serial 110.239,469. Y .Y

My invention relates to improvements in heaters whereby heat from a gas burner or the like may -be efficiently radiated to warm a room. Y

The present invention constitutes an improvement upon the device 'disclosed in my Patent No. 1,655,658, January10, 1928, and consists of 'improved features of constructionand arrangement whereby a larger heat radiating area and an increasedeifciency is obtained.

The primary object is to provide proved heater construction.

` Another object is to provide an improved device which is operable as an independent heating unit which may be connected to any an imconvenient fuel supply and which may be' readily transported and connected for use in desired locations.

`A further object is to provide an improved heater which will give increased from the fuel consumed.

A still further object is to provide an improved ldevicewhich can be economically manufactured and which is attractive in appearance. f

I accomplish these and other objects by means of the improved device disclosed in the drawings forming a part of the present application wherein like characters of reference are used to designate similar parts throughout the drawing and specification, and in which-'- The figure is a vertical of my improved heater.

Referring to the drawing the numeral 1 is used to designate a base provided with a reduced tapered upper body portion 2 and having ay plurality of the top thereof. The base is preferably made square in form and the upper body portion 2 is made frusto-pyramidal, with the side walls hipped as vat l1 with the upper wall portions converging at a greater angle from the vertical than the lower wal-l portions. The base '1 is preferably mounted upon'legs 6 mounted at the corners thereof, and a burner 7 is mounted across the under side ofthe baseand centrally disposed under the body portion 2 thereof by means of supporting strapsI '8 and 9. The burner 7 may be of any suitable form Vand is arranged toreceive fuel through a supply connection 10 connected in any convenient manner,not illustrated, to asourceA of fuel supply. A

mid-sectional view openings 3 formed in shield plate 11 is mounted between the four legs 6 slightly below the burner 7. A heatdiusing vmember 12v is mounted upon the top of the body portion 2 of the base, saidy member having a plurality i of openings 13 formed in the top and around the upper portions of the side walls. The

ymember 12 is frustopyramidal in form and is provided `with afflange 14 resting upon the top of the base, said member forming.

la heating chamber immediately over ythe openings 3 in the top of the base. An outer shell 16 has its lower edge ariranged to telescopeonto the lower Wall portions of the body portion 2 :of the base;

.The shell 16 is frusto-pyramidal inform and is closed across the top by a top plate 17. A ventmember 18 is securedupon the back wall of theshell near the bottom thereof and communicates with the shell through an opening 18 registering with the vent.

' A baiiie Vplate 21 is mounted `within the back ofthe shell 16, the lower edge ofthe plate being engaged between the lower edge of the shell and the 'adjacent surface of the body portion 2 of the base. The plate 21 is offset inwardlyfrom the back wall of the shell 16 at a point immediately below the vent 18 and extends Vupwardly to a point slightly below the top of the shell in spaced parallel relation to the back wall ofl said shell, thereby formino' a vent passage across the back of the shell to communicate jbetween the top of the shell andthe vent18.

The plate 21 is shaped to lit closely between theside walls of the shell. J f A top baliie plate 22 is `securedupon the upper endof thebackbaiilel21.- rlhe top baile extends entirely across the upper portion of the shell slightly below thetop thereof and substantially parallel to the top plate 1 7 thereby forming a vent passage across the top of the shell. Vent openings 23 and 24 are formed in the front and rear edgesv of the plate 22 to -communica-te between the top ventpassage and the main body ofthe shell and the back vent passage respectively. An intermediate baille plate 26 is secured along its rearward edge upon the back baille plate 21. The plate 26 extends entirely across the shellbetween the baille 21 and the front and side walls of the shell, ysaid plate'26 being positioned substantially midway between thetop of .the member 12 and the ton baille plate 22. Vent openings 27 are los formed in the front and side edges of the plate 26 to communicate between the upper and lower portions of the shell 16, said openings being formed preferably by striking out portions of the plate upon the edges and doubling the struck out portions back to form flanges 28 along the inner edges of the vent openings.

In operation, fuel issuing from the burner 7 is burned within the base 1, the heat and flame passing upwardly through the openings 3 and into the member 12. The base 1 and member 12 are preferably made of cast iron so as to absorb and hold a high amount of heat. The member 12 is quickly heated to a red heat and the fuel entering said member is entirely consumed before issuing from the member 12 through the openings 13.- rlhe products of combustion and a surplus of air circulated upwardly therewith issue from the openings 18 in a highly heated condition and pass upwardly into the body of the shell 16. From the lower portion of the shell, the heated gases pass through the openings 27 into the upper portion of the shell, the circulationbeing rea highly heated condition.

tarded by the restricted passage afforded by the openings 27 so that the front and side walls of the shell will absorb and radiate much of the heat from the gases. The gases pass from the upper portion of the chamber into the upper vent through the opening" 23, the circulation being further retarded and the upper walls of the shell absorbing and radiating the heat from said gases. From the upper vent passage, the gases pass downwardly between the back baffle 21 and the back of the shell and pass outwardly through the vent 18.

The baffle plates 22 and 26 Vshield the top of the shell from direct exposure to the heat from the burner and the member 12, and at the same time retard the circulation of the highly heated gasespto such an extent that an efficient radiation of heat from the walls of the shell occurs. The back baffle 21 shields the back wall of the shell' from direct heat and thus permits theheater to bey placed relatively close to a wall Vor other object without danger of overheating. The retarded circulation vand the relatively long circuituous course followed by the gases around the baffle plates results in a high heating eflicency. After the base 1 and member 12 have been initially heated, the burner may be turned down to consume only a very small amount of fuel and still maintain the member 12 in Thereafter the circulation of burned gas and air past the heated member 12 causes the mixture to be highly heatedV as it passes upwardly through the shell and the shell walls are thus kept heated both by radiation from the lmember 12 and the upper portion of the base 1, and by absorption from the passing gases, thus maintaining an efficient heating with a minimum consumption of fuel.

The hipped construction of the upper base portion 2 causesthe, edges of the shell to engage the base 1 only at the extreme lower edge where the base is heated only to a slight degree. This protects the shell from injury by excessive yheating and insures that the heat from the burners will be distributed over the full radiating area of the shell.

Vfhile l have illust-rated and described the preferred construction, my device may be modified in several details without departing from the spirit of my invention. I therefore do not wishy to restrict myself to the exact details disclosed, but desire to avail myself of all modifications which may fall within the scope of the appended claims.

Having thus described my invention what I claim as new and desire'to secure by Letters Patent is 1. A heater comprising a base arranged to be supported over a fuel burner, said base having openings in the top thereof; a heat diffusing member mounted upon the top of the base and covering the openings therein, said member having openings in the upper portion thereof; an outer shell fitted over the base and enclosing the heat diffusing member; a vent formed in the back of the shell; and a bathe mounted within the shell in spaced relation to the back of the shell to form a vent passage from the top of the shell to the vent.

2. A heater comprising a base arranged to be supported over a fuel burner, said base having openings in the top thereof; a heat diffusing member mounted upon the top of the base and covering the openings therein, said member having openings in the upper portion thereof; an outer shell fitted over the base and enclosing the heat diffusing member; a vent formed in the 'back of the shell; a baille mounted within the shell in spaced relation to t-he back of the shell to form a vent passage from the top of the shell to the vent; and apertured plates carried by the'bale and extending between said baille and the front and side walls of the shell. i

3. A heater comprising a base arranged to be supported over a fuel burner, said base having openings in the top thereof; a heat diffusing member mounted upon the top of f the base and covering the openings therein, said member having openings in the upper portion thereof; an outer shell fitted over the base and enclosing the heat diffusing member; a vent 'formed in the back of the shell; a baffle mounted within the shell inV spaced relation to the back of the shell to form a vent passage from the top of the shell to the vent; and a plate secured upon the upper end ofthe bae plate 'and exllO tending across the upper portion of the shell between said baffle plate and the front and side walls of the shell and having a vent opening.

4. A heater comprising a base arranged to be supported over a fuel burner, said base having openings in the top thereof; a heat diffusing member mounted upon the top of the base and covering the openings therein, said member having openings in the upper portion thereof; an outer shell tted over the base and enclosing the heat diffusing member; a vent formed in the back of the shell; a baiiie mounted within the shell in spaced relation to the back of the shell to form a vent passage from the top of the shell to the vent; and a pair of space-d parallel plates mounted upon the baffle plate and extending across the upper portions of the shell between said baffle plate and the front and side walls of the shell, said plates having vent openings.

5. A heater comprising a base arranged' to be supported over a. fuel burner and provided with a tapered upper body portion having a plurality of openings in the top thereof; a heat diffusing member mounted upon the top of the base and having a plurality of openings in the top and upper side portions thereof, said member forming a heat chamber directly over the openings in the base member; a shell closed atV the top and having its lower edge telescopingover the tapered body portion of the base; a vent s formed in the back of the shell near the bottom thereof; and a baflie plate having its lower edge engaged between the shell and the base and offset to extend upwardly in spaced relation to the back wall of the shell to a point slightly spaced from the top of the shell toform a vent passage across the back of said shell.

6. A heater comprising a base arranged to be supported over a fuel burner and provided with a tapered upper body portion having a plurality of openings in the top thereof; a heat diffusing member mounted upon the top of the base and having a plurality of openings in the top and upper side portions thereof, said mem er forming a heat chamber directly over the openings in the base member; a shell closed at the top and having its lower edge telescoping over the tapered body portion of the base; a vent formed in the back of the shell near the bottom thereof; a baffle plate having its lower edge engaged between the shell and the base and offset to extend upwardly in spaced relation to the back wall of the shell to a point slightly spaced from the top of the shell to form a vent passage across the back of said shell; and a plate extending from the upper edge of the baie plate to the front of the shell to form a vent passage across the top of the shell, and communicating wit-h the back vent passage, said plate having a vent opening formed adjacent the front wall of the shell. n

7. A heater comprising a base arranged to be supported over a fuel burner and provided with a tapered upper body portion having a plurality of openingsin the topthereof; a heat diffusing member mounted upon the top of the base and having a plurality of openings in the top and upper side portions thereof, said member forming a heat chamber directly over the openings in the base member; a shell closed at the top and having its lower edge telescoping over the tapered body portion of the base; a vent formed in the back of the shell near the bot-l tom thereof; a baffle platev having its lower edge engaged between the shell and the base and offset to extend upwardly in spaced relation to the back wall of the shell to a point slightly spaced from the top of the shell to form a vent passage across the back of said shell; and a plate mounted upon the top of the baffle plate and extending across the upper portion of the shell in spaced relation to the top of the shell, said plate having vent openings formed adjacent the front and back walls of the shell.

8. A heater comprising abase arranged to be supported over a fuel burner and provided With a tapered upper body portion having a plurality of openings in the top thereof; a heat diffusing member mounted upon the top of the base and having a plurality of openings in the top and upper side portions thereof, said member forming a heat chamber directly over the openings in the base member; a shell closed at the top and having its lower edge telescoping over f lower edge engaged between the shelland the base and odset to extend upwardly in spaced relation to the back wall of the shell to a point slightly spaced from the top of the shell to form a ventpassage across the back of said shell; a top baflie plate mounted upon the upper end of the baffle plate and extending across the upper portion of the shell inspaced relation to the top of the shell, said plate having vent openings formed adjacent the frontand back walls of the shell; and an intermediate baffle late mounted upon the back baffle plate van extending between said back baflle plate and the side and front walls of the shell, said intermediate baffle plate having openings formed adjacent the sides and front of the shell. Y

In witness whereof, I hereunto set my signature.

EDWARD NAUER. 

